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Improved implementation of dust-driven winds and dust formation in models of AGB evolution: Effects of pulsation and gas-pressure forcing
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2017 (English)In: Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society, Societa Astronomica Italiana , 2017, no 3, p. 389-392Conference paper, Published paper (Refereed)
Abstract [en]

Mass loss is a crucial component in stellar evolution models, since it largely determines the rate of evolution at the later stages of a star’s life. The dust-driven outflows from AGB stars are particularly important in this regard. Including AGB dust formation in a stellar evolution model does also require a model of these outflows. Since AGB stars exhibit large-amplitude pulsation, a model based on time-dependent radiation hydrodynamics (RHD) is needed in order to capture all the important physical aspects of dust formation. However, this cannot be afforded in a stellar evolution model. Here, a mean-flow model is presented, which include corrections to the steady-state model currently being used in AGB evolution models with dust formation. 

Place, publisher, year, edition, pages
Societa Astronomica Italiana , 2017. no 3, p. 389-392
Keywords [en]
Stars: AGB and post-AGB, Stars: atmospheres, Stars: evolution, Stars: mass loss, Stars: variables: general
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-251793Scopus ID: 2-s2.0-85064410039OAI: oai:DiVA.org:kth-251793DiVA, id: diva2:1318146
Conference
2017 AGB-Supernovae Mass Transition, 27 March 2017 through 31 March 2017
Note

QC 20190527

Available from: 2019-05-27 Created: 2019-05-27 Last updated: 2019-05-27Bibliographically approved

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